def _exporter_for_item(self, item):
product_name = item['name'][0]
exporter = CsvItemExporter(self.product_file,
include_headers_line=False)
exporter.fields_to_export = ['name', 'price', 'availability']
exporter.start_exporting()
self.product_to_exporter[product_name] = exporter
return self.product_to_exporter[product_name]
def get_exporter(self, item):
"""
Finds / creates an exporter for a given item
Takes item as an argument and returns an exporter
:param item: Pass an item to get its exporter
"""
# Extract key from item using ItemAdapter
adapter = ItemAdapter(item=item)
key = adapter[self.key_field]
# Create an exporter for the key, if needed
# Check if the key doesn't exist in the dictionary
if (not (key in self.exporters)):
# Open a CSV file to create a new exporter
exporter = CsvItemExporter(open(
file=f'output/{self.out_dir}/{key}.csv', mode='ab'),
include_headers_line=False)
# Construct the header row from self.fields
header = {
self.fields[i]: self.fields[i]
for i in range(0, len(self.fields))
}
# Configure the fields to export
exporter.fields_to_export = self.fields
# Start exporting the file
exporter.start_exporting()
# Export the header row
exporter.export_item(item=header)
# Add exporter to the dictionary
self.exporters[key] = exporter
# Return the corresponding exporter
return self.exporters[key]
